If Wangji is here and maybe needs him a little - if only to buffer between other people and the whole of everything happening inside his mind, that gives Xichen more than enough reason to focus. To keep going, rather than just...

Stop.

Whatever this place really wants of them, his brother is here. So he has something to protect. Something to live for. Perhaps even something to give, though it will be bittersweet, he's sure. Though he can see the questions, and he knows he will not resist them long.

"I would like that, please. And yes, we can find them - we will search." Slowly, he reaches to squeeze the back of Wangji's arm briefly, fingers delicate over the silk. Your wait will not be as long. Not anymore.

This much, Xichen is certain. However they have come here, Wangji has not gone missing for an extended period of time, so surely ...?